Geopolymer is a potential solution to the high carbon emissions caused by cement. Life cycle assessment (LCA) methodology was applied in this study to evaluate the environmental impacts of pavement road bases with reuse and recycling strategies. We considered four types of stabilized road base materials to evaluate environmental impacts: waste glass-fly ash based geopolymer stabilized macadam (WFAG), fly ash based geopolymer stabilized macadam (FAG), cement stabilized macadam (CS) and cement-fly ash stabilized macadam (CFAS). Two alkaline activators were used to synthesize geopolymer road base materials. The results showed that the application of geopolymer road bases reduced global warming (GWP) significantly. Comparing with CS, the GWP of WFAG and FAG declined by 17.9% CO₂, _eq per function unit. The combined alkaline activator consisting of sodium hydroxide (NaOH) and water glass had lower environmental impacts compared to the one with pure NaOH alkaline activator. The ozone layer depletion (ODP) of geopolymer stabilized road bases using pure NaOH solution was an order of magnitude higher than the ODP using the combined alkaline activator consisting of NaOH and water glass. For other indicators except GWP, the environmental impacts of conventional road bases were lower than geopolymer stabilized road bases, indicating a pollution transfer during application of geopolymer road bases.

地质聚合物是解决水泥引起的高碳排放的一种潜在解决方案。生命周期评估（LCA）方法应用于本研究中，以利用再利用和再循环策略评估路面基础对环境的影响。我们考虑了四种类型的稳定道路基础材料，以评估其对环境的影响：废玻璃粉煤灰基地聚合物稳定碎石（WFAG），粉煤灰基聚合物地稳定碎石（FAG），水泥稳定碎石（CS）和水泥粉煤灰稳定的碎石（CFAS）。使用两种碱性活化剂来合成地聚合物道路基础材料。结果表明，地质聚合物路基的应用显着降低了全球变暖（GWP）。与CS相比，WFAG和FAG的GWP下降了17.9％CO ₂，每个功能单元的_当量。与使用纯NaOH碱性活化剂的碱性活化剂相比，由氢氧化钠（NaOH）和水玻璃组成的组合碱性活化剂对环境的影响较小。使用纯NaOH溶液稳定的地聚合物稳定路基的臭氧层消耗（ODP）比使用由NaOH和水玻璃组成的组合碱性活化剂的ODP高出一个数量级。对于除全球升温潜能值以外的其他指标，常规路基的环境影响要低于地聚合物稳定的路基，这表明在应用土聚合物路基期间会产生污染转移。